299 lines
8.2 KiB
C
299 lines
8.2 KiB
C
/*
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* Copyright : (C) 2022 Phytium Information Technology, Inc.
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* All Rights Reserved.
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*
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* This program is OPEN SOURCE software: you can redistribute it and/or modify it
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* under the terms of the Phytium Public License as published by the Phytium Technology Co.,Ltd,
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* either version 1.0 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the Phytium Public License for more details.
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*
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*
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* FilePath: fnand_ecc.c
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* Date: 2022-05-12 14:17:42
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* LastEditTime: 2022-05-12 15:56:27
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* Description: This file is for ecc validation related api
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*
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* Modify History:
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* Ver Who Date Changes
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* ----- ------ -------- --------------------------------------
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* 1.0 huanghe 2022/05/10 first release
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*/
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#include "fnand_ecc.h"
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#include "fnand.h"
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#include "fnand_hw.h"
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#include "fdebug.h"
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#define FNAND_ECC_DEBUG_TAG "FNAND_ECC"
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#define FNAND_ECC_DEBUG_I(format, ...) FT_DEBUG_PRINT_I(FNAND_ECC_DEBUG_TAG, format, ##__VA_ARGS__)
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#define FNAND_ECC_DEBUG_W(format, ...) FT_DEBUG_PRINT_W(FNAND_ECC_DEBUG_TAG, format, ##__VA_ARGS__)
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#define FNAND_ECC_DEBUG_E(format, ...) FT_DEBUG_PRINT_E(FNAND_ECC_DEBUG_TAG, format, ##__VA_ARGS__)
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/**
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* @name: FNandGetEccTotalLength
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* @msg: 根据page size 与 ecc_strength（纠错个数）确定硬件ecc 产生
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* @param {u32} bytes_per_page
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* @param {u32} ecc_strength
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* @return {*}
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* @note:
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*/
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u32 FNandGetEccTotalLength(u32 bytes_per_page, u32 ecc_strength)
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{
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int ecc_total = 0;
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switch (bytes_per_page)
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{
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case 0x200:
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if (ecc_strength == 8)
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{
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ecc_total = 0x0D;
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}
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else if (ecc_strength == 4)
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{
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ecc_total = 7;
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}
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else if (ecc_strength == 2)
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{
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ecc_total = 4;
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}
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else
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{
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ecc_total = 0;
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}
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break;
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case 0x800:
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if (ecc_strength == 8)
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{
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ecc_total = 0x34;
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}
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else if (ecc_strength == 4)
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{
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ecc_total = 0x1a;
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}
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else if (ecc_strength == 2)
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{
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ecc_total = 0xd;
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}
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else
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{
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ecc_total = 0;
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}
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break;
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case 0x1000:
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if (ecc_strength == 8)
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{
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ecc_total = 0x68;
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}
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else if (ecc_strength == 4)
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{
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ecc_total = 0x34;
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}
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else if (ecc_strength == 2)
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{
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ecc_total = 0x1a;
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}
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else
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{
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ecc_total = 0;
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}
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break;
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case 0x2000:
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if (ecc_strength == 8)
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{
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ecc_total = 0xD0;
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}
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else if (ecc_strength == 4)
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{
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ecc_total = 0x68;
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}
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else if (ecc_strength == 2)
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{
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ecc_total = 0x34;
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}
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else
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{
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ecc_total = 0;
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}
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break;
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case 0x4000:
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if (ecc_strength == 8)
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{
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ecc_total = 0x1A0;
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}
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if (ecc_strength == 4)
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{
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ecc_total = 0xD0;
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}
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else if (ecc_strength == 2)
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{
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ecc_total = 0x68;
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}
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else
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{
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ecc_total = 0;
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}
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break;
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default:
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ecc_total = 0;
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break;
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}
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FNAND_ECC_DEBUG_I("[%s %d]writesize: 0x%x, ecc strength: %d, ecc_total: 0x%x\n", __func__, __LINE__, bytes_per_page, ecc_strength, ecc_total);
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return ecc_total;
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}
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/**
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* @name: FNandCorrectEcc
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* @msg:
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* @note:
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* @return {*}
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* @param {uintptr_t} base_address
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* @param {u32} ecc_step_size 单次ecc 使用的步长大小
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* @param {u32} hw_ecc_steps 一页操作需要进行的ecc 次数
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* @param {u8*} buf page 页 对应的指针
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* @param {u32} length
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*/
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// s32 FNandCorrectEcc(uintptr_t base_address,u32 ecc_step_size,u32 hw_ecc_steps,u8* buf ,u32 length)
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// {
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// u32 i, j;
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// u32 value, tmp;
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// int stat = 0;
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// if(!buf)
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// {
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// FNAND_ECC_DEBUG_E("page buffer is null");
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// return -1;
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// }
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// /* i */
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// for (i = 0; i < hw_ecc_steps; i++)
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// {
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// for (j = 0; j < 2; j++) {
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// value = FNAND_READREG(base_address, 0xB8 + 4 * (2 * i + j));
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// FNAND_ECC_DEBUG_W("index:%x i is %d ,j is %d ",
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// 0xB8 + 4 * (2 * i + j),i,j);
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// if (value)
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// {
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// FNAND_ECC_DEBUG_W("offset:%x value:0x%08x\n",
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// 0xB8 + 4 * (2 * i + j), value);
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// //phytium_nfc_data_dump2(nfc, nfc->dma_buf + (ecc_step_size * i + tmp/8)/512, 512);
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// }
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// tmp = value & 0xFFFF;
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// if (tmp && (tmp <= 4096))
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// {
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// tmp -= 1;
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// FNAND_ECC_DEBUG_W( "ECC_CORRECT %x %02x\n",
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// ecc_step_size * i + tmp / 8,
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// buf[ecc_step_size * i + tmp / 8]);
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// buf[ecc_step_size*i + tmp/8] ^= (0x01 << tmp%8);
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// stat++;
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// FNAND_ECC_DEBUG_W( "ECC_CORRECT xor %x %02x\n",
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// 0x01 << tmp % 8,
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// buf[ecc_step_size * i + tmp / 8]);
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// }
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// else
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// {
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// FNAND_ECC_DEBUG_E("ECC_CORRECT offset > 4096!\n");
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// }
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// tmp = (value >> 16) & 0xFFFF;
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// if (tmp && (tmp <= 4096) )
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// {
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// tmp -= 1;
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// FNAND_ECC_DEBUG_W( "ECC_CORRECT %x %02x\n",
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// ecc_step_size * i + tmp / 8,
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// buf[ecc_step_size * i + tmp / 8]);
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// buf[ecc_step_size*i + tmp/8] ^= (0x01 << tmp%8);
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// stat++;
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// FNAND_ECC_DEBUG_W( "ECC_CORRECT xor %x %02x\n",
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// ecc_step_size * i + tmp / 8,
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// buf[ecc_step_size * i + tmp / 8]);
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// }
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// else
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// {
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// FNAND_ECC_DEBUG_E("ECC_CORRECT offset > 4096!\n");
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// }
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// }
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// }
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// return stat;
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// }
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// 校验offset 0xb8 + i * 0x10
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// 校验强度为 2 j = 1
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// 校验强度为 4 j = 2
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// 校验强度为 8 j = 4
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s32 FNandCorrectEcc(uintptr_t base_address, u32 ecc_step_size, u32 hw_ecc_steps, u8 *buf, u32 length)
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{
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u32 i, j;
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u32 value, tmp;
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int stat = 0;
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if (!buf)
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{
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FNAND_ECC_DEBUG_E("Page buffer is null");
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return -1;
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}
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/* i */
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for (i = 0; i < hw_ecc_steps; i++)
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{
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for (j = 0; j < 4; j++)
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{
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value = FNAND_READREG(base_address, 0xB8 + 0x10 * i + 4 * j);
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tmp = value & 0xFFFF;
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if (tmp && (tmp <= 4096))
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{
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tmp -= 1;
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FNAND_ECC_DEBUG_W("ECC_CORRECT %x %02x\n",
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ecc_step_size * i + tmp / 8,
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buf[ecc_step_size * i + tmp / 8]);
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buf[ecc_step_size * i + tmp / 8] ^= (0x01 << tmp % 8);
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stat++;
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FNAND_ECC_DEBUG_W("ECC_CORRECT xor %x %02x\n",
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0x01 << tmp % 8,
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buf[ecc_step_size * i + tmp / 8]);
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}
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tmp = (value >> 16) & 0xFFFF;
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if (tmp && (tmp <= 4096))
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{
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tmp -= 1;
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FNAND_ECC_DEBUG_W("ECC_CORRECT %x %02x\n",
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ecc_step_size * i + tmp / 8,
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buf[ecc_step_size * i + tmp / 8]);
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buf[ecc_step_size * i + tmp / 8] ^= (0x01 << tmp % 8);
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stat++;
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FNAND_ECC_DEBUG_W("ECC_CORRECT xor %x %02x\n",
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ecc_step_size * i + tmp / 8,
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buf[ecc_step_size * i + tmp / 8]);
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}
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}
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}
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return stat;
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}
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